EXTRACT OF METEOROLOGICAL OBSERVATIONS FOR HONG KONG, MAY 1998
EXTRACT OF METEOROLOGICAL OBSERVATIONS FOR HONG KONG,
MAY 1998
| Date MAY |
Mean Pressure (hPa) |
Air Temperature | Mean Dew Point Temperature (deg. C) |
Mean Relative Humidity (%) |
Mean Amount of Cloud (%) |
Total Rainfall (mm) | ||
|---|---|---|---|---|---|---|---|---|
| Maximum (deg. C) |
Mean (deg. C) |
Minimum (deg. C) | ||||||
| 1 | 1010.5 | 29.9 | 27.6 | 25.7 | 24.3 | 83 | 73 | Trace |
| 2 | 1011.1 | 28.7 | 26.4 | 21.9 | 23.7 | 86 | 90 | 69.2 |
| 3 | 1011.3 | 25.9 | 24.6 | 22.1 | 21.9 | 85 | 84 | 4.5 |
| 4 | 1010.3 | 27.3 | 25.2 | 23.9 | 22.7 | 86 | 78 | 2.8 |
| 5 | 1011.8 | 28.5 | 26.1 | 24.8 | 23.4 | 85 | 67 | - |
| 6 | 1013.6 | 29.9 | 26.7 | 24.7 | 23.6 | 83 | 52 | - |
| 7 | 1014.2 | 31.0 | 27.5 | 25.4 | 23.9 | 82 | 36 | - |
| 8 | 1013.0 | 31.3 | 28.1 | 26.3 | 24.8 | 83 | 49 | Trace |
| 9 | 1011.0 | 30.2 | 27.7 | 26.8 | 24.9 | 85 | 84 | 0.9 |
| 10 | 1010.0 | 30.1 | 27.6 | 25.8 | 25.7 | 89 | 79 | 20.5 |
| 11 | 1010.1 | 32.2 | 28.6 | 26.9 | 24.5 | 79 | 75 | Trace |
| 12 | 1010.7 | 31.1 | 28.5 | 26.7 | 24.8 | 81 | 65 | - |
| 13 | 1010.6 | 31.6 | 28.8 | 27.1 | 25.0 | 81 | 59 | - |
| 14 | 1008.7 | 31.3 | 28.8 | 27.3 | 24.4 | 78 | 61 | - |
| 15 | 1007.4 | 29.0 | 26.7 | 24.3 | 24.2 | 86 | 78 | 37.6 |
| 16 | 1008.9 | 30.8 | 27.7 | 25.4 | 23.7 | 80 | 55 | - |
| 17 | 1009.8 | 27.6 | 26.5 | 25.2 | 24.9 | 91 | 88 | 37.3 |
| 18 | 1011.0 | 29.9 | 27.6 | 26.2 | 25.2 | 87 | 86 | 0.3 |
| 19 | 1010.3 | 27.9 | 26.7 | 25.2 | 25.2 | 91 | 92 | 10.8 |
| 20 | 1009.8 | 28.9 | 27.0 | 25.4 | 24.7 | 87 | 90 | 1.2 |
| 21 | 1009.2 | 28.2 | 26.5 | 25.5 | 25.0 | 91 | 91 | 7.9 |
| 22 | 1007.6 | 28.4 | 26.9 | 25.3 | 24.4 | 86 | 88 | Trace |
| 23 | 1006.4 | 28.7 | 27.4 | 26.5 | 25.2 | 88 | 86 | 2.7 |
| 24 | 1005.5 | 27.4 | 25.2 | 22.4 | 23.8 | 92 | 94 | 78.1 |
| 25 | 1006.7 | 24.8 | 22.6 | 21.2 | 18.0 | 76 | 88 | Trace |
| 26 | 1008.5 | 26.4 | 24.1 | 21.4 | 19.7 | 76 | 88 | - |
| 27 | 1009.0 | 27.9 | 25.8 | 24.6 | 22.3 | 81 | 79 | Trace |
| 28 | 1007.1 | 30.3 | 27.1 | 24.5 | 22.3 | 76 | 31 | - |
| 29 | 1005.7 | 31.1 | 28.1 | 26.5 | 23.7 | 78 | 73 | 1.6 |
| 30 | 1007.7 | 27.3 | 26.0 | 24.2 | 24.2 | 90 | 95 | 23.0 |
| 31 | 1008.9 | 26.5 | 25.4 | 24.3 | 24.3 | 94 | 99 | 36.8 |
| Mean/Total | 1009.6 | 29.0 | 26.8 | 25.0 | 23.8 | 84 | 76 | 335.2 |
| Normal | 1009.1 | 28.7 | 25.9 | 23.9 | 22.6 | 83 | 74 | 316.7 |
| Station | Hong Kong Observatory | |||||||
| Date MAY |
Total Bright Sunshine (hours) |
Daily Global Solar Radiation (MJ/m2) |
Total Evaporation (mm) |
Prevailing Wind Direction (degrees) |
Mean Wind Speed (km/h) |
|---|---|---|---|---|---|
| 1 | 7.4 | 15.52 | 3.7 | 170 | 17.3 |
| 2 | 2.5 | 7.79 | 1.9 | 180 | 19.5 |
| 3 | 1.2 | 7.12 | 2.6 | 040 | 10.1 |
| 4 | 5.2 | 14.24 | 1.6 | 050 | 14.1 |
| 5 | 6.7 | 18.90 | 3.9 | 100 | 14.1 |
| 6 | 8.4 | 19.42 | 4.2 | 110 | 13.3 |
| 7 | 11.3 | 24.79 | 5.3 | 070 | 16.1 |
| 8 | 11.2 | 23.72 | 5.6 | 090 | 16.8 |
| 9 | 7.3 | 18.41 | 4.7 | 100 | 23.7 |
| 10 | 8.5 | 21.48 | 4.4 | 100 | 18.4 |
| 11 | 7.5 | 17.77 | 4.5 | 120 | 9.4 |
| 12 | 7.0 | 17.90 | 4.3 | 090 | 10.4 |
| 13 | 9.5 | 20.79 | 4.7 | 090 | 12.1 |
| 14 | 6.2 | 12.85 | 4.6 | 150 | 10.9 |
| 15 | 2.3 | 9.06 | 4.3 | 090 | 20.9 |
| 16 | 10.9 | 24.60 | 5.4 | 070 | 17.7 |
| 17 | - | 3.54 | 3.3 | 090 | 17.3 |
| 18 | 4.7 | 16.87 | 3.4 | 100 | 13.2 |
| 19 | - | 5.20 | 1.3 | 090 | 20.3 |
| 20 | 0.8 | 13.09 | 1.8 | 090 | 22.8 |
| 21 | 0.7 | 6.43 | 1.3 | 090 | 23.0 |
| 22 | 0.5 | 10.63 | 2.5 | 100 | 27.8 |
| 23 | 1.0 | 8.29 | 2.4 | 100 | 23.9 |
| 24 | - | 1.05 | 3.2 | 120 | 28.9 |
| 25 | 0.6 | 10.34 | 2.7 | 360 | 31.6 |
| 26 | 0.4 | 10.23 | 2.3 | 360 | 12.5 |
| 27 | 3.2 | 14.31 | 2.7 | 100 | 8.5 |
| 28 | 9.9 | 21.86 | 4.5 | 250 | 12.1 |
| 29 | 4.4 | 16.75 | 4.8 | 130 | 13.9 |
| 30 | - | 4.65 | 0.7 | 090 | 38.0 |
| 31 | - | 2.74 | 1.3 | 090 | 40.3 |
| Mean/Total | 139.3 | 13.56 | 103.9 | 100 | 18.7 |
| Normal | 153.8 | 16.12 | 137.7 | 090 | 19.2 |
| Station | King's Park | Waglan Island^ | |||
The minimum pressure recorded at the Hong Kong Observatory was 1003.9 hectopascals at 1546 HKT on 29 May.
The maximum air temperature recorded at the Hong Kong Observatory was 32.2 degrees C at 1234 HKT on 11 May.
The minimum air temperature recorded at the Hong Kong Observatory was 21.2 degrees C at 0615 HKT on 25 May.
The maximum gust peak speed recorded at Waglan Island was 81 kilometres per hour from 360 degrees at 1148 HKT on 15 May.
The maximum instantaneous rate of rainfall recorded at King's Park was 209 millimetres per hour at 1815 HKT on 2 May.
^ In case the data are not available from Waglan Island, observations of Cheung Chau or other nearby weather stations will be incorporated in computing the Prevailing Wind Direction and Mean Wind Speed.